Mai haɗuwa‍‍Wani irin high-yi karfe karfi bangare haɗi, ba tare da lubrication mai, tsari mafi m, high ƙarfi, dogon aiki rayuwa, babu juyawa rabo, ba tare da zafin jiki da kuma gurɓataccen mai tasiri, da siffofin juriya acid, alkali juriya lalata, dace da shaft motsi na high zafin jiki, high gudun, da lalata matsakaicin kafofin watsa labarai yanayi‍‍